Jet Propulsion Laboratory
California Institute of Technology
A simplified example of how the distance between the GRACE-FO satellites changes as they pass from the Caribbean Sea across Colombia and Peru.
How GRACE-FO Measures Gravity
Changes in total water storage on Earth in 2007, as measured by GRACE.
Water Storage on Earth in 2007
NASA JPL-UC Irvine glaciologist Eric Rignot explains how glaciers in West Antarctica are changing.
West Antarctic Collapse
GRACE observed Earth’s surface mass changes nearly every month from 2002 to mid-2017. GRACE Follow-On will provide crucial continuity to these observations for the next five years or more.
Earth Mass Changes, 2002 to 2017
The SpaceX Falcon 9 rocket is seen with the NASA/German Research Centre for Geosciences GRACE Follow-On spacecraft onboard at Space Launch Complex 4E at Vandenberg Air Force Base in California.
GRACE-FO in Falcon 9 on Launchpad
The GRACE-FO satellites were assembled by Airbus Defence and Space in Germany. The photo shows one of the satellites in the testing facility of IABG, an Airbus subcontractor, in Munich (view 3).
GRACE-FO Satellites in Testing
Between 2002 and 2016, Antarctica shed approximately 125 gigatons of ice per year, causing global sea level to rise by 0.35 millimeters per year.
Antarctic Ice Loss 2002-2016
The rocket carrying GRACE-FO lifts off into a blue sky, with the Pacific Ocean beneath it.
GRACE-FO Launch, Sky and Sea
The NASA/German Research Centre for Geosciences GRACE Follow-On spacecraft launches onboard a SpaceX Falcon 9, May 22, 2018, from Vandenberg Air Force Base in California.
GRACE-FO Launches, Ocean View
A 3D interactive model of NASA's GRACE-FO spacecraft.
GRACE-FO 3D Model
Measuring Earth's Gravity from Space poster
Measuring Earth's Gravity from Space Poster
This map from September 2015 shows deep drought in California, Nevada and Texas.
Groundwater Drought Indicator
The two GRACE-FO satellites are seen from GFZ’s Satellite Laser Ranging Station in Potsdam, Germany, on May 23, 2018 at 22:16 UTC and 22:17 UTC, respectively.
GRACE-FO Satellites From Potsdam
GRACE-Follow On (GRACE-FO) is a satellite mission scheduled for launch in May 2018. GRACE-FO will continue the work of the GRACE satellite mission tracking Earth's water movement around the globe. ...
Tracking Water from Space
The GRACE-FO satellites, attached to turntable fixtures, at the Astrotech Space Operations processing facility at Vandenberg Air Force Base, California (view 1).
GRACE-FO Satellites, Attached to Turntable Fixtures
The GRACE-FO satellites were assembled by Airbus Defence and Space in Germany. The photo shows one of the satellites in the testing facility of IABG, an Airbus subcontractor, in Munich (view 2).
GRACE-FO Satellites During Testing (View 2)
The GRACE-FO satellites are nearly identical. The Microwave Interferometer (MWI) will measure the minute variations in distance between the spacecraft.
Illustration of GRACE-FO above Antarctica.
GRACE-FO Above Antarctica
The GRACE-FO satellites, attached to turntable fixtures, at the Astrotech Space Operations processing facility at Vandenberg Air Force Base, California.
GRACE-FO Satellites at Vandenberg
For 15 years, the GRACE mission has unlocked mysteries of how water moves around our planet. It gave us the first view of underground aquifers from space, and shows how fast polar ice sheets and mo...
15 Years of GRACE Earth Observations
Illustration of GRACE-FO in orbit (view 4)
Illustration of GRACE-FO (View 4)
The Laser Ranging Interferometer instrument.
Laser Ranging Interferometer
GRACE-FO will measure Atlantic Ocean bottom pressure as an indicator of deep ocean current speed, as GRACE did.
Ocean Bottom Pressure
Gravity anomaly map using GRACE data.
Gravity Anomaly Map Using GRACE Data
Illustration of GRACE-FO above Alaska.
Illustration of GRACE-FO Above Alaska
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